Querying the Change History of a Parameter Template

Function

This API is used to view change history of a parameter template.

Constraints

Only the parameter change history of the last seven days can be viewed.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

If you are using role/policy-based authorization, see Permissions Policies and Supported Actions for details on the required permissions.

If you are using identity policy-based authorization, the following identity policy-based permissions are required.

Action	Access Level	Resource Type (*: required)	Condition Key	Alias	Dependencies
dds:configuration:listUpdatedHistory	list	-	-	dds:instance:list	-

URI

URI format
GET /v3/{project_id}/configurations/{config_id}/histories
URI example
https://dds.ap-southeast-1.myhuaweicloud.com/v3/0549b4a43100d4f32f51c01c2fe4acdb/configurations/341bc383a3e24221a94c4ad0b4547e8apr02/histories?offset=0&limit=10

**Table 1** Path parameters
Name	Mandatory	Type	Description
project_id	Yes	String	Definition Project ID of a tenant in a region. Obtain the project ID by following the instructions in Obtaining a Project ID. Constraints N/A Range N/A Default Value N/A
config_id	Yes	String	Definition Parameter template ID. Constraints N/A Range N/A Default Value N/A

**Table 2** Query parameters
Name	Mandatory	Type	Description
offset	No	Integer	Definition Index offset. Constraints If offset is set to N, the query starts from the N+1 piece of data. The value is 0 by default, indicating that the query starts from the first piece of data. The value must be a positive number or 0. Range N/A Default Value 0
limit	No	Integer	Definition Maximum records to be queried. Constraints If this parameter is not transferred, the first 100 records are queried by default. Range 1 to 100 Default Value 100

Request Parameters

**Table 3** Request header parameters
Name	Type	IN	Mandatory	Description
X-Auth-Token	string	header	Yes	Definition User token obtained from IAM. For details, see Authentication. Constraints N/A Range N/A Default Value N/A

Response Parameters

**Table 4** Response body parameters
Name	Type	Description
histories	Array of Table 5-5 objects	Definition Change history of the parameter template. Range N/A

**Table 5** HistoryInfo
Name	Type	Description
parameter_name	String	Definition Parameter name. Range N/A
old_value	String	Definition Value before modification. Range N/A
new_value	String	Definition New value. Range N/A
updated_at	String	Definition Modification time. The format is "yyyy-MM-ddTHH:mm:ssZ". T is the separator between the calendar and the hourly notation of time. Z indicates the time zone offset. For example, in the Beijing time zone, the time zone offset is shown as +0800. Range N/A

Example Requests

None

Example Responses

{ 
  "histories" : [ { 
    "parameter_name" : "rateLimit.mbps", 
    "old_value" : "500", 
    "new_value" : "350", 
    "updated_at" : "2022-06-07T09:25:45+0000" 
  } ] 
}

SDK

Click Document Database Service DDS SDK to download the SDK or view the SDK document. To learn how to install and authenticate an SDK, read the Usage section.